what's up R riders. I could use some help. '87 250R full throttle 1st, 2nd, go to hit 3rd and engine cuts out. Just like turning the key off. Back off to 1/2 throttle and the engine comes back alive, but barely running. Let it idle a couple seconds and it smooths out. I can run 1/4 to 1/2 throttle all day long, open her up 1st, 2nd and it cuts out. R and R the carb, it was clean inside. I put in a new plug also. HELP