Good luck!! If you slowly slide the lsn assembly in and out you will notice it has a catch in it. Also look under the carb boot it should still have oil residue in it from the nitro. To me the whole slide assembly seems loose. I also put a new seal on the lsn. Thanks for taking the time to look at it Puddin. I know you have been watching what you eat,but you have earned 1 bonus pudding cup of your choice! Don't get the low fat one either, they are worse for you then regular.