i had a lagg in my car and it would idle weird. it would go up and down, up and down. then i got my diagnostic and he told me that my motor had advanced timing and returned it to stock and thats when he told me that my head was prob milled.then he told me that my distributor might be bad so i need to change it. he didnt fix the lagg in my car. i went home and noticed that my throttle body screw adjuster was missing so i went to the junkyard and bought the missing screw. i still had the lagg and idle problem on my car. i bought a distributor but they gave me the wrong one. so i just changed my plugs and wires and i noticed a big improvement in my performance.my car doesnt idle weird anymore and it doesnt have the lagg anymore. i have store credit on my distributor so im going to get my head ported and polished for $325. so i just needed to know why this guy told me that my head was milled, and if it is safe to get my head ported and polished. these guys are from HOOK-UPS IMPORT TECH and they were trying to get me to spend a lot more money then i should, and they are suppose to be the shit in southern cali but they try to rip you off, and dont fix your problem.