It is no problem, if you befriend the other A-cat sailors. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> They will no doubt give advice, and "tinkering" is not really that difficult once you get into it.
Otherwise, search help on this forum. Advice is free here..

When that is said, all boats need maintenance, fixing, repairs and "tinkering" from time to time. A's are not buildt to be bulletproof, but fast. An old wooden A will surely require some work from time to time (at least painting).