Getting a cylinder 2 and 4 misfire after replacing head gaskets.

Hello, have you performed a compression test of the engine to find out what is going on on all cylinders including two and four? It's really hard to say what's going on, but a cylinder leak down test and a compression test may help you understand what's going on. It seems clear that something related to tear down and reinstallation is part of the problem. But don't jump to conclusions, perform needed testing before the need to tear down again. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops