[STL RT/10]

Perhaps they can shed some light on my situation...

I recently pulled my fuel tank to replace the sending unit, as my fuel gauge was INOP. After re-installing it, everything was fine. After 50 miles or so, the SES light came on. It was an EVAP purge valve fault. I cleared it with a cheap scanner, but it came back after 10 miles or so. I then used a Snap-On scanner that actually had software for the Viper on it and did a complete clearing / test cycle. I also pulled the rear access panel again and checked for any poor connections, leaks, fuel vapor smell, etc. None existed. I drove 100 miles or so then (with several starts and stops), and the light is back on. Any thoughts? I can only assume that a small amount of air is somewhere from my removing the tank. Is there a reset procedure that should be performed when doing this? I may also note that putting gas in it can sometimes be a &*#$!. I have to hold the vapor recovery hose back to keep the pump running. It is almost like the tank isn't venting properly. Maybe this is common on RT/10s, as you have to hold the handle alomost vertically. It is an '02 RT/10 with 6k miles. Thanks!

Matt