modified

Hey folks! Could need some advise. A clubmate has an awesome FH techn. but his backhand is really suck.. hes planning to switch to long pimples on BH. He said that there are ways to "manipulate" the rubber.. Has anyone of you ever heard something about this ? Which long pimple to buy ...

Does anyone knows how to play against the modified LP?? Before this I've got no problem playing with normal LP but nowadays, the modified one really cause me a headache. It's different than the normal pips. If you topspin the incoming LP ball, it'll give you not an underspin ball but it returns...