RE: A GLH for 2012
I use pressure to help with fuel draw with enlarged intake holes and to help get a staedier needle valve setting through out the engine run. It also makes fuel tank location less critical. Pretty much all the same reasons as with a Tee Dee or Norvel. Plus, it's just fun to play with the little engines and to get them to turn so fast.
Sorry for the hijack 7700
Bob