If ya can not turn teh collar manually and by the use of tools to enable you to get a better grip... I would follow up and take it back to Chris...Originally Posted by 3A2220143823222D3F4B0 link=1259987028/0#0 date=1259987028
If it was not changed or adjusted in the shop and you have been unable to change it.. Then either faulty unit at the outset (Warranty ?) or you have been doing it wrong ;)
Let us know how it all goes..
Dont let the post purchase dissidence get ya down... They are a great grinder...