Help Me Please with grass catcher

[Newbie Here]

I purchased a used Kubota Grass catcher model number GCK60-23bx. I have a 60 inch deck which has model number RCK60B23BX which I use on my BX2360. I went to my local Kubota dealer and purchased a 60 inch boot kit as the prior owner had a 54 inch deck. The dealer sold me the boot kit and when I try to install it the Stay fulcrum 60 part # K6057-3152-0 will not attach to the front of the Boot case Assy. part # K6056-3001-0 as per the manual. As well the 60 inch mower plate part # K6056-3158-0 appears wrong. The dealer ordered the parts under warranty but they are the same as I had. I'm thinking that I still have the parts from the 54 inch kit. Am I missing something here? The stay fulcrum isn't lining up with the boot kit. Unless I have the wrong boot assy. The part on the boot assy is K60563101 and also has K60563102...:

 

[wild bill]

I have a BX2360 with a RCK54-23BX deck using a GCK60-23BX catcher, purchased new in 2010. My instruction manual for the boot kit to be used on a RCK60B-23BX deck lists the following part numbers:
Case K6056-3001-0
Stay Fulcrum K6056-3151-0
Plate K6056-3158-0

For use on a RCK54-23BX deck:
Case K6056-3003-0
Stay Fulcrum K6056-3161-0
Plate K6056-3168-0

These numbers were valid in 2010