Hey all, need advice.

Just replace all fuel lines, did NOT disassemble or clean fuel selector, disassembled carbs to the point to replace filters, then reassembled with new gaskets to replace what I had disturbed. DID NOT mess with carb settings whatsoever.
New plugs, New oil filter, New fuel filter, New fresh 87 octane fuel.
New Solas Concord 15/20 impeller, New OEM 267000314 pump, New Solas intake grate.
Starts GREAT, low and midrange GREAT.
BUT only making 6250 or so RPM @ WOT. Butterflies ARE fully open with a touch of slack in cable. Made 6850'ish last season.

I'm seeing a lot of mention of TPS and RAVE issues may be the cause...thoughts?

Or could it be that the prop and grate are introducing enough pressure into the pump where the engine is doing all it can?

Does a 2000 GTX 951, Millenium with out DI even have a TPS? If so, wtf is it? lol

Advice/help?