I have a newer style rpm ive done thr lp conversion it works great but a leak has started near the niod i hear it best when i listen through the feed neck all o rings look fine ive taken apart and lubed and it still leaks please help
Fixed a couple of RPM's with your same problem by replacing those 0-rings even when they still looked good. Replace the 0-rings on the main valve. Part #26 in the manual. Even if they look good they are easily messed up during assembly and should be replaced. Be sure to lube the new ones before you install them.