I did put the grip back in the same location as well as the control casing; I'll see if I can adjust the casing in farther to make it work that way. I did not have any problem moving the grip because of the cross hatching.
Yes, I do understand what delrin does. To me, It looks like that is only standard option on the ST1300 model as the drop down only shows that model.
Sonny
It's quite possible it was an inventory thing and the options are updated based on how many of which ones they have left. Just a thought.