New customer, system is approx 10yrs old. 12 zones. All zones are working from a controller & valve standpoint. issue is 8 out of 12 zones have broken heads, one zone has a cracked lateral and almost all the rotor heads are leaning(one was watering a light pole lol). some of the spray heads are broken. i call this a mix match system because some of the rotors are Orbit brand and some are rainbird. now here is my question. for ease of maitenance and replacement/repair should i just go ahead and convince the customer to change out all the rotors to rainbird? i stock a good bit of rainbird sprays/rotors and parts in my trailer due to a large system i maintain at a school. im going back out monday to replace the damaged heads and fix the lateral thats broken. i fgure it would only add another hour or two to switch out the other rotors in the yard.