Glad to hear you had a good experience with the VP30,...I also used the OS140RX fitting that replaces on of the crankcase screws on my OS-160's. The older OS160 had a flat back plate, so drilling and tapping was easy. The new ones have more architecture and it's difficult to get into those tight spaces with tools to drill and tap the backplate. The OS140 RX fitting works great and it looks kool!
Regards,
Bill Holsten
Team Fliton