was actually thinking of trying to borrow 24s from someone to try. the 26s seemed to pull ok mid range these motor just aren't enough for this boat. that i know but they're reliable and don't have to many problems.

You should still be able to pull low 60s. Talk to Brett at BBlades to get props worked. He knows the Fastech boats well and will get your current props dialed in.

Good advise.

I'm no expert, especially with the fastech, but 28's on 310's really seams to be a mismatch to me

without knowing the gear ratio it will be hard to tell you if the boat is over pitched or not. agreed with most. 28's seem a bit steep in general.

Agreed, that was gonna be my next question, I don't think Formula played with the ratio on the 312, but u never know, especially with stock power, my 303 has 1.36 but I'm running 502's

Those props are way to big IMHO. I have a 353 with 502's and it runs a factory 28 pitch prop. I would think you need a 26 or possibly something eve smaller

Check fuel pressure and and change fuel filters.

I had a 312 and every 312 I ever heard of came with 1.65 Bravos........the 454 mag and 502 mag boats came with 30's. (My 312 had 502s and 30's)

Now, maybe those are the right props but somebody put 1.5 bravos on the boat.......making them too big.

^^Very Good Points Made^^