Anne will fix you up.

Call Anne at Van's.

If you tell her what engine you're using, what prop, slider/tipper, and that its a 7a and you'll have a current one that's perfect.

Took me a couple of tries, but I didn't tell her all of the info, and she sent me what she thought I was looking for-- my fault.

I'm a believer from getting the info straight from the mothership.