Suffering a little from death grip desensitization from gripping on too tight when jacking off, which is a daily activity for me. Trying to resensitize my dick by cutting waayyy back on frequency now and using a Fleshlight. Got the ass insert which has little ridges in it. Used it for the last time last night. Felt great and had an awesome orgasm. Thing is, I'm about 6.5" around and thought it might be a tight fit. Not at all. Maybe I just need to use this regular sleeve until I'm resensitized? Which insert do you thick dudes use?