I like piper chuck's recommendation. The 7UAF is at least 15 years old, and probably would benefit from a checkup. It's a good radio and will serve you well. The entire plug-in RF module can be swapped out by the user. The RX crystal can be swapped out by the user, also. Any interior work on either TX or RX or crystal swapping on the TX will necessitate a trip to the shop as suggested by chuck.

Send'em off.

Dr.1