She's alive and running 😉 it was the carbs in the end one jet was blocked.
Good job - the most common problem with 660s is jets that are plugged with dried residue from evaporating fuel because, with dual carbs for just one cylinder, the jet passages are so small!
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo