Hello fellas, tried to do a search and couldn't't find the information I was looking for. Could one of you please suggest a better pump than what PG is putting in their Ultras. What I have found so far is someone suggesting a 1.8 gpm Shureflo pump to replace the 1gpm. Once I get the part number and or the pump will I need to change the spray tips or should I leave them and adjust the dilutions of my applications? While we are at it one of the threads suggested replacing the battery with a gel battery. Once again part number or place to buy one.