Hi I recieved this from my fathers basement and am very new to woodworking. Heres my problem, The jig has a plastic fingerlike guide for the router which looks like a giant comb. The fingers on it are 1/2 inch as well as the spaces in between. When I route I need a collar on my router for the bit to ride along this finger jig. So what happens is the female cut come out fine with 1/2 inch dovetails but the male ends come out larger because the collar thickness. Am I doing somthing wrong or do i have to adjust for a second cut everytime which comes out sloppy
ps Im using a 1/2 inch doetail bit
Mick