del, The person from the P & R Club I had bought it from told me that the T1 Sight was Not Original and it was Not a tight fit either so the night before I applied oil and also used some grease with a shaved q-tip and got to use my 2nd Sight installer and removal tool and it slid right off and when I installed the this one Sight it went on without any problems. but like you mentioned though I was nervous as heck but i just took my time doing it and didn't do any damaged to it. That is one area if I feel it's TOO tight I would take it to the The Club and have them fix it,