The other company referred to here was BCMA and Adam is a standup guy. He replaced the BCMA engine with a Zenoah G20 which runs flawlessly. He insured customer satisfaction and I am in the process of purchasing another engine from him (MVVS used) on his word that it runs well. As to the apparent loose rod bearing, I have never seen an engine with that much play. You can rock the shaft a good 1/8 inch and not move the piston. Now perhaps this is"normal", I just have never wittnessed it. Now the engine I recieved was suppossedly test run for at least 30 minutes before it was shipped and it appeared to have been run. I can imagine their test setup uses the same ignition module for testing all engines and perhaps the module I recieved wasn't tested, I don't know. What I do know is the engine never even attempted to run even for a few seconds, just an occassional pop. The ignition module appeared somewhat flimsy. I think the Brilleli boys replace the China module with a CH unit, probably for good reason. Seems to me a new "tested" engine should at least attempt to run. I hope the guy testing the 45 gets the opportunity soon as I am interested in the results.