Any one have any issues or concerns with their 325PD's? I am looking at a used one but found out it has been back to the factory 3 times already. Also is there any differences in maintenance or what ammo you can use between the old steel and new light weight TI/SC revolvers? I believe the first time it was sent back was due to a hard to pull trigger. They reworked the action and it was sent back worse then before. Went back to S&W Due to the fact it was still very hard in DA plus and it felt like it was filled with grit. Reworked and was fine. Then sent back due to the cylinder blowing by the stop on a hard ejection. Has not been fired since. Think it is worth $350.00?