Well you have learned something! HOPEFULLY! clogged inj. will not cause a rich condition, it will cause a lean cond and will most of the time send your ski into a limp mode which will damper your RPM to about 4000. yes ther is an adjustment on the oil pump but you need a svc manual! If you get it to lean you will scorch a cylinder! better be rich than to lean, remember you need just enought smoke so you can see and smeel it, not kill mosquitos!!