Gotta say I'm giving this some serious thought. My gassers so far have been exposed and If there's ever any starting issues when the choke alone won't get it done (mostly only after not running for extended periods of time) I've kept a little eyedropper thingy I made handy to shoot a little fuel directly into the carb and away it goes. The next model I'll beputting together has a full cowl with no way to easily access the carburetor. I'm thinking most tuning will be done with the cowl off or I might have to make some kind of small access hole to allow access to the needles. To facillitate easy starting in all circumstances I do believe a primer bulb is just what the doctor ordered. All my carbs are set up for it anyway. If I can manage to locate it somewhere that'sfairly inconspicuous I may just do it...