I agree in part with this statement Tom but I think the troubles of cockers are made to seem more than they acctually are. My 1st marker was a cocker and yes it was hard to tech but after reading up on the subject and a bit of fiddling it soon becomes easy. With cockers its a matter of knowing what your doing if you go at it blind youll just end up with a marker that shoots dulux The Egos are great markers and problems are very rare with them, plenty of upgrades easily available but not much will ever need changing. If your looking for a project Phil then id say a shocker, ion or a cocker (half block obviously )Brave man...
Cockers are not an easy gun to get on with, due to the very nature of the gun, it's reversed engineering causes many problems.