soon upgrading to at700 4ug4....is it safe ti string it at 22*24lbs bg80 or should i go for the 3ug4???? i play mostly offensive singles. thanks.
3u is fragile enuf.. 4u is like using a condom with a hole in it. u are just asking for trouble :/ at that string tension the frame will not have any problems.. just dont clash..
It is preferably to be 3u, but the grip size you choose (3u or 4u) you must choose it on your own. About the tension, it is ok to set the tension on that lbs. As long as it is not high(around 30lbs), if it do, no problem. Just keep your racket safely!