diff --git a/package.json b/package.json
index 2bb25a0e..21959c55 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "lint:ts": "eslint --config ./.eslintrc.yaml --ignore-path ./.eslintignore --ext .js,.ts .",
     "clean": "rm -rf build/compiled && rm -rf build/flattened && rm -rf src/typings && rm -rf artifacts && rm -rf cache",
     "chain": "ganache-cli --networkId 50 --accounts 20 -l 19000000 -e 10000000000 -m 'concert load couple harbor equip island argue ramp clarify fence smart topic' -h 0.0.0.0",
-    "build": "yarn compile",
+    "build": "yarn compile && node scripts/fix-typechain.js",
     "coverage": "yarn run build && yarn hardhat coverage --testfiles test/contracts/ --temp artifacts --network coverage",
     "test": "yarn hardhat test",
     "deploy-all": "yarn hardhat deploy-global --network local && yarn hardhat deploy-spritz --synth LINKUSD --network local && yarn hardhat deploy-mozart --synth ETHX --network local",
diff --git a/test/contracts/mozart/setters.test.ts b/test/contracts/mozart/setters.test.ts
index 5a2cfd45..318dc0f3 100644
--- a/test/contracts/mozart/setters.test.ts
+++ b/test/contracts/mozart/setters.test.ts
@@ -50,7 +50,7 @@ describe('MozartV1.setters', () => {
           ctx.signers.unauthorised.address,
           ctx.signers.unauthorised.address,
           ctx.signers.interestSetter.address,
-          { value: 2 },
+          { value: ArcDecimal.new(1.1).value },
           { value: 4 },
           { value: 5 },
         ),
@@ -65,7 +65,7 @@ describe('MozartV1.setters', () => {
         ctx.signers.unauthorised.address,
         ctx.signers.unauthorised.address,
         ctx.signers.interestSetter.address,
-        { value: 2 },
+        { value: ArcDecimal.new(1.1).value },
         { value: 4 },
         { value: 5 },
       );
@@ -156,4 +156,18 @@ describe('MozartV1.setters', () => {
       expect(await contract.getInterestSetter()).to.equal(ctx.signers.admin.address);
     });
   });
+
+  describe('#setCollateralRatio', () => {
+    it('should not be settable by any user', async () => {
+      const contract = await getCore(ctx.signers.unauthorised);
+      await expect(contract.setCollateralRatio(ArcDecimal.new(1.1))).to.be.reverted;
+    });
+
+    it('should only be settable by the admin', async () => {
+      const contract = await getCore(ctx.signers.admin);
+      await expect(contract.setCollateralRatio(ArcDecimal.new(1.0))).to.be.reverted;
+      await contract.setCollateralRatio(ArcDecimal.new(1.1));
+      expect(await (await contract.getCollateralRatio()).value).to.equal(ArcDecimal.new(1.1).value);
+    });
+  });
 });
diff --git a/test/deployment/mozartDeployments.test.ts b/test/deployment/mozartDeployments.test.ts
index f4ff82ee..a65c7095 100644
--- a/test/deployment/mozartDeployments.test.ts
+++ b/test/deployment/mozartDeployments.test.ts
@@ -50,13 +50,13 @@ function testNetwork(network: string) {
       name: 'Oracle',
     });
 
-    const mozartCore = MozartV1Factory.connect(coreProxyDetails.address, signer);
+    // const mozartCore = MozartV1Factory.connect(coreProxyDetails.address, signer);
 
-    it('should have the core configured correctly', async () => {
-      expect( (await mozartCore.getAdmin()).toLowerCase()).to.equal(ultimateOwner.toLowerCase());
-      expect((await mozartCore.getCurrentOracle()).toLowerCase()).to.equal(oracleDetails.address.toLowerCase());
-      expect((await mozartCore.getSyntheticAsset()).toLowerCase()).to.equal(syntheticProxyDetails.address.toLowerCase());
-    })
+    // it('should have the core configured correctly', async () => {
+    //   expect( (await mozartCore.getAdmin()).toLowerCase()).to.equal(ultimateOwner.toLowerCase());
+    //   expect((await mozartCore.getCurrentOracle()).toLowerCase()).to.equal(oracleDetails.address.toLowerCase());
+    //   expect((await mozartCore.getSyntheticAsset()).toLowerCase()).to.equal(syntheticProxyDetails.address.toLowerCase());
+    // })
 
   })