Brian W - your question asked about the length of the carriage bolts for wheel weights but then you mentioned you thought they were 1/2", which is of course the bolt diameter. I see Don mentioned he likes using a threaded rod bolted to the wheel, which must allow him to add or remove extra weights (but must give him a Ben Hur style bolt). The correct length varies depending on the width of the wheel you're using. The parts manual specifies 3 different lengths, 6", 7" and 7 and 1/2" depending on the wheel (don't know where you can get a 7 and 1/2" carriage bolt), but it's also not consistent from one model to another (which doesn't make sense if the wheel width is the same). I can only suggest you hold a weight on your wheel and slip something thru to determine "exactly" what length is correct for you. I hate to see the Ben Hur charriott style bolts used that stick out about 4" to far and are just waiting to skin up someone's knee cap or shin.
Bill J - I sure hope you're keeping a record of those quick questions. I don't know the actual draw of the electric PTO on a QL, but the fuse is a 10AMP slow blo, if that helps (it's listed in the Operator Manual). I've had some problems with those fuses blowing especially when you're in a hurry and don't use a slow blo replacement, so it must get pretty close to 10AMPs, initially at least. The manual calls out the same fuse for the lights but I don't think they have near the draw, and don't really need the slow blo, so when I've been in the pinch/hurry I've switched the 10AMP slow blo from the lights to the PTO and just put in a standard 10AMP for the lights, without having a problem.
Sorry I just couldn't bring myself to giving you a quick answer.