TJ-680 Rev 1 Installation Instructions
TJ-680 Rev 0 Installation Instructions
If you purchased a TJ-680 before 8/1/13 you have a Rev 0 model. If you purchased the product after that date you can use the Rev 1 instructions.
The only major changes between these revisions regard the size of the guide bushing.
To identify which revision you are using use this graphic:
