It's starting to cool down now, only 95 today, so I have begun to clean and inventory some things. Last night I ordered reapair kit for my Optimus 8R and just for S&Gs today I wondered if one of them would start up! Yup still has fuel from 20 years ago and since it was "proper" Coleman fuel it was not into varnish. Followed the normal start up and had a hot flame in just a few seconds. No pump came with it but I purchased the push on years ago and it aids in priming the pan. Any one else still use these?