I'm 58, 6500hr ATP, 1800 TPIC but zero 121.436 time. Got a few 121 apps in a few months ago. Endeavor bonuses &c. looked great but they're only hiring Captains right now. Timing - or lack thereof - is everything, even nowadays. I really grind my teeth over the pay cut to start over in the world of 121 bureaucracy. If no interview in the next month or so I will probably forget about it and stay 91/135...yes, I know lots of folks waited 10 years in the rain to get the 121 gig they wanted but I have other offers on the table...!