Nice, I never thought to grind the lock.I had the same issue. Our hitch tube has an extra bracket on the sides that connects it to the bumper. This causes some pins to be too short.
I like to use this Silent Hitch Pin because it bolts the hitch tight up against the side of the receiver tube and keeps it from wiggling around. I had to modify the lock to make it work. I basically just ground down the body of the lock so that it wouldn't touch the hitch tube so soon.
My locking masterlock pin aslo was too short. I got out a larg drill bit and just hollowed out the edge a bit ( about the TIP deep) so that the locking mechanism is counter sunk.My old locking trailer hitch pin is too short for my new truck. I bought a new one and it's too short as well. I think I found one on ebay that will work. Any one else have this problem? On another note, my truck tows great!!!
Good Idea!My locking masterlock pin aslo was too short. I got out a larg drill bit and just hollowed out the edge a bit ( about the TIP deep) so that the locking mechanism is counter sunk.
Hope this helps... I think i used a 1" Bit or maybe 1 1/4" jut measure you pin mark and figure out how deep it needs to be.
The Master Lock one pictured in the package is one of the ones I have. I got it at Walmart though.My Walmart is very limited. The dumbell looking one is too short as is the other one. Here is the one on ebay that I believe will work. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&_trkparms=tab%3DWatching&viewitem=&item=200238359679&_trksid=p3907.m32