I dropped my top gear from stock 26 to a 24. Sled is a mxzx800. Is this drop to much for the stock chain? The tensioner is finger tight put is at its limit. I haven't ridden the sled yet beacause of impeller problems. Thanks

You may want to change chains, because they will stretch and you will have no room for adjustment. You should be able to find a chain in the parts section of this site.