I will add....Depending on what you are actually experiencing---bent bolt handle is a fairly general symptom... There was a problem with some receivers/breeches that caused binding when the bolt handle was "tight". Loosen the bolt handle and the binding would go away. I initially thought it was a bent bolt, but ultimately that was not the case. The offending area in the cocking pin slot was identified after removing the breech/barrel assembly and addressed with a Dremel. Not saying this is absolutely what is wrong with yours, but one of the WAR guns I previously owned had this problem.
I would enjoy the guns for what they are and not dump more $$$ into them. I may find myself under attack by the remaining die hard WAR fans but here goes anyway... IMO, a .30 pellet or light slug shooter is the Flex's sweet spot. Stepping up to .35 can be done, but as a previous Flex owner x2 I wouldn't recommend it. Though many areas of the gun appear to be built like a tank, there are other weak points. Such as it relies on a total of 4 long 4-40 screws holding it all together, no different than a Gen 2 Mrod from that perspective.
Orings are almost the same as an Mrod, they are very simple guns to maintain.
