wrong casters?

[Enchilada Jones]

I bought the Mark V used and they didn't send the casters, the seller said when they bought the amp originally they never received them so they called Mesa and had them shipped directly to me. Cool seller. But now the box arrives and I don't see how these casters would attach to the metal plates on the bottom of the MarkV. they are the kind with a simple post and the plates on the bottom of the amp have no hole...

Can anyone show me a picture of what they are supposed to look like? Have they changed over the years? Do you have to drill the hole? I see what looks like a screw in the plate that might really just be a plug in the hole I need but the post for the casters they sent would be up into the reverb tank possibly...and the plate on the bottom of the amp also looks like it has a rail to it as if the caster would have been on a mating plate that slides into the rails of the plate on the amp and it has a spring loaded pin that would be the release for the sliding plate....

 

[MrMarkIII]

Yup, they're called Track-Loc Casters, and Mesa has 'em here:
http://mesa.stores.yahoo.net/harac.html
You're correct, they slide into the brackets on the cab bottom.

 

[evilsaint]

http://powerdragon-powerdragon.blogspot.com/search/label/Orange