Hi all! So recently my 07 ltr started to backfire really bad and would bog a lot especially when I gave it throttle. I noticed the fuel pump sounded pretty weak so I put the fuel pump from my 06 ltr450 on it and cleaned the whole fuel system and the bike ran great. So thinking my fuel pump was bad I ordered a new one and today I installed it and it initially ran great. So then I went ahead and changed the oil and rolled the bike slightly over to get all the oil out and after I was done I started the bike again and I noticed when I turned the key I heard a lot of bubbling inside the tank and notice the inline filter had a lot of air in it. The bike started to bogg again and sputters when I give it throttle. I don’t understand what could’ve happened between when I changed the pump and it running and changing the oil after that. The in-line and tank also bubble when the bike is on. Any ideas? Thanks in advance!