As the topic says, Ive made an noticable improvement to the handling of my standard mk1 172 for just 11 pounds.
I bought a pair of 3mm spacers for the front wheels and hey presto! Much less nervous handling round quick corners, and it also seems to turn in a bit better too. Got the spacers from Half*rds and fitted them yesterday and would recommend it to anyone who wants slightly less twitchy handling from their MK1. Amazing the difference 6mm to the front track makes.