Problem with late sprocket support

[HKZ Bob]

Dear folks,

I have a problem using late sprocket supports with second generation chain tensioners. ( J just rebuild them)
I used the late sprocket support because they were much better condition that my original ones.
Now I realize that they are thicker and not allowing me to use Chain Tensioner Slip Prevention Collars. ( Too less clearance)
What is my option to not equipped the collars or grinding the blimp down. Is the blimp hardened.
I don't want to change to the feeded tensioners.

Thank you for your advice.

Here some pictures

[304065]

Until the chains stretch, you won't be able to get the collars on, most people operate without them for a few thousand miles, then the chains have stretched (worn, actually) enough to get them to fit.