A quick question: Is it a disaster if the two legs of a v-dipole antenna are different resistances? Thanks.
If you are speaking of a different DC resistance in each leg, such as would be the case when different gauges of wire are used in each leg, this normally should not be a significant problem. If you are dealing with a very extreme case, you may wish to post more details.
What this would impact is the efficiency of the antenna. Efficiency is one of the factors that determine gain. But the radiation resistance of an inverted V is quite high, so any small increase in loss due to a different gauge of wire will have a minimal impact on efficiency or gain.
Feeding the antenna with a proper 1:1 balun will also help to minimize any side effects from minor loss differences in the legs.