I can't be doing with too many telltales on the boat. i just have a pair on the jib and one on the mainsail leech.
Point the spanner at the shroud untill you are hitting the max on the downhaul from time to time, then bring it in to point at the end of the rear beam.
Changing gears is sooooooooooo important and it is easy to get into a mind set of the pattern of the wind and assume what the next change in set-up is going to be.
try to approach each leg/lap of the race as if it is the 1st of the day. mentally erase all your settings at the leeward mark, look at the conditions and set every part of the boat up accordingly.