Quote:
"I have heard that I need to buy the Tom Cook Remote Needle valve for both of my OS Engines"

I never used a remote needle on my OS engines. I did use them on all my Viojets, but when I used it, it was to set the needle on the ground before flight. I rarely used it in flight unless we were competing for the top speed trophy at an event in the d/f days when we still did speed.

Hope this helps.

Dennis Lott