That may be so, but I've been flying my Venus II now for, oh, two years I guess.. and so far, I installed the OS 1.20 AX, tightened the muffler (and I mean tight) and let it go. It has not leaked nor come loose.
Jeech.. now that we are talking about it, Murphy's Law will definitely prevail..[:@] I had better get some hi-temp RTV!!