I bought a Strat Ultra earlier in the year and have thus far stuck to 9-42 gauge strings because that is what that is what Fender supply and it is what the guitar was set up to take (with the exception I’m using bullets whereas the guitar came with ball end). The past month I’ve been learning blues lucks involving 1st string bends and I’ve had to change the strings twice in three weeks because of a broken E string. I don’t get this problem with my Les Paul, fitted with Regular Slinky, so I was thinking of increasing the string gauge on the Fender to 10s. However I’ve heard that changing to heavier strings will affect the intonation and therefore requires the guitar to be serviced afterwards. Is this really the case with such a small increase as 9s to 10s? If so I’ll leave it until a more convenient time.