o-ring help

[BCDIRECT@enetis.net]

Need help from the group finding two O-rings. Dealer was no help at all. Still fighting the backfiring problem when I coast. Previous help lead to the coasting enricher on the left side of the carb. No O-ring! Fred sent me the smallest one he had but it was to big. The repair manual mentions a flat side on it also. I actually tried using the one Fred sent but same ole' thing. Also when I drilled out the cap on my pilot screw and unscrewed it, it had no O-ring. Does anyone have access to these two O-ring that could help me out? Barry A-7