72 merc 20hp, runs fine for the most part, however occasionally after a long period of low rpm travel, it will die if I open the throttle up.* Sometimes it will start right back up , some times its more difficult and I* may have to choke.* It will idle fine at this point but usually will die again if try a hole shot. I say sometimes because othertimes it may just take off.* Always has resolved on it own, usually just baby it back to higher rpms. -I think it is probably a carb issue, the float sticking or something along those lines.* I already have a carb kit but trying to hold off until fall.* Is there anything else I should be concerned about?-Thanks