The engine is likely OK. I bought a new Magnum 52 FS and it had very little static compression. It started and ran fine. The lack of compression still concerned me so I packed it up and sent it back to Magnum Service Center. They returned it with a test report that said there was no problem. It is a ringed engine and has never had much static compression. As long as it starts and runs OK, don’t worry. Since then I have acquired a Magnum 30 FS and an ASP 30 FS, neither of which have much static compression, but start and run well. I finally don’t sweat it as it must be normal. All of the engines idle slow and smooth and turn up at full throttle within the engine specs. On the other hand, my Saito 80 has real good compression.