I currently have an 11 zone toro 6000 system. There are 4 heads on each zone I need more pressure out of these heads as my contractor I believe spaced them out too far apart (approx 35'). I was thinking about switching to more powerful heads but would cost a small fortune considering I have 44 of them. I have town water pressure is ok but was wondering if I added a sprinkler pum (have heard good things about Gould pumps) that could get more pressue out of the heads to get more coverage. I am hioping this is the answer but do you think that both will have to be done meaning pump and head replacement. If the heads are the issue3 what would you recommen as a reliable more powerful head. The toros are alright but am not thrilled with them I alwauys have 4-5 heads that dont work when spring comes along and they are a pain to adjust the radius. The system is only 4 years old so it kills me to make another big investment in it.