HTC :: Touch HD Can't Answer Calls / When Press Answer / Ignore / Freezes Until It Goes To Voicemail

My phone works perfectly except I can't answer calls, when I press answer/ignore it freezes until it goes to voicemail and then comes back. I've flashed multiple roms and had the problem with all of them. I'm not using any special themes or anything, and the only software I ever install are HD Tweak and Finger Keyboard 2.1 and my radio 1.14.25.24. Here's a list of what I've done since I had the phone:

1. Bought phone. Flashed HSPL. Flashed Laurentius L26, no problems. Was being lazy so I didn't hard reset after flashing.
2. Flashed Dutty R14. Didn't hard reset after flashing. No problems for awhile and then the problem of not being able to answer calls appeared.
3. Flashed EnergyRom wm6.5 rom. Hard reset twice after. Still having problem where I can't answer calls.
4. Flashed Dutty 3.9XT wm6.1 rom. Hard reset twice after. Still having problem where I can't answer calls.

If anyone can help me figure out why my phone is doing this I'd really appreciate it, I'll even pay you some money on PayPal if you like because I really want to fix it. Here are some ideas I had as to why it's not working:

- Problem with rom flash. No, because I tried it with 3 different roms so far and had the same problem.
- Touch HD isn't fast enough to run wm6.5 and be stable. No, because I tried it with a wm6.1 rom too and had the same problem.
- Someone suggested it might be a problem with the battery. No, because I ordered new replacement batteries and tried them and had the same problem.
- Some of the settings in HD Tweak are incompatible with something in the roms I'm using. Maybe, is this possible? I don't really change much, just the softkeys and the highlight color and things like that.
- Screwed up something in the SPL or something because I didn't hard reset after flashing the first 2 roms. Maybe, is this possible?
- Dropped my phone and somehow managed to break nothing but the mechanism involved in answering calls. Maybe, is this possible?

Today I'm going to reflash HSPL, flash the stock HTC rom, hard reset twice, and see if I still have the problem. I don't know what else to do or what other possibilities there are. If anyone can shed some light on this issue, that would be great, because I really don't want to have to buy a new phone.