Need Some Help

[bud15]

I have a problem with my injectors leaking on my 90 mustang gt. It has a higher flow fuel pump in it. Is it possibly the fuel pressure is set too high or are they just bad injectors. I replaced two already with 2 rebuilt ones. They are leaking near the top where the yellow plastic meets the metal casing. I am thinking of just replacing all the injectors with 24 lb ones. The car has a b303 cam,ported heads, 65 mm throttle body, shorty headers off road h-pipe and flomasters. Would it be a good idea too add bigger injectors with these mods or would it be over fueling. Any advise would be greatly appreciated. Thanks