I would like to give credit to my new "Next generation laser collimator" tool.
Brillant, you just place it in the eyepiece & turn it on.
First thing you see is the laser dot is not center on the Primary & no laser dot on the Bullseye target of the tool.
Simply adjust the secondary to place the laserdot dead center on the primary mirror then adjust the primary to put the laser dot on the bullseye of the tool.
I bought it from Alan at "Sky's the limit" in the UK & it cost $40 uk