After a bit of investigating, I've found secondary pump is 50cc with a 30cc primary pump. The secondary squirter is a #31.

I think I will start experimenting with the squirter size to see if I can minimize the bogging... I'm not sure what range to try but I was thinking of jumping up to maybe 39-41 on the top end with a hollow screw...

Anyone have an opinion on what range I should try? I'm planning to go up until I see black smoke, then back off a couple sizes but it would help if I can narrow down the likely range rather than buying a huge set of squirters...

thanks again,

Chris