smt problem

[glencross]

after many years of faithful service, my 3000 is starting to act up!!
I recently noticed that i was not getting a true cut when ripping: it was always off a tad.
i have found what i think is the problem.. when i install the mitre bar(?) with the round thingee in it's hole, the reading on the right hand side is 4 degrees but if i set the left hand side to 4degrees, it gives me an inaccurate cut...so...what i have done is to set the left hand side to 3 degrees and then all is ok and the cut is accurate. the smt has no slop in it and slides easily so it does not appear to be the smt fault....any one got any suggestions as to what i can do other than what i am doing?
thanks

[LCHIEN]

after many years of faithful service, my 3000 is starting to act up!!
I recently noticed that i was not getting a true cut when ripping: it was always off a tad.
i have found what i think is the problem.. when i install the mitre bar(?) with the round thingee in it's hole, the reading on the right hand side is 4 degrees but if i set the left hand side to 4degrees, it gives me an inaccurate cut...so...what i have done is to set the left hand side to 3 degrees and then all is ok and the cut is accurate. the smt has no slop in it and slides easily so it does not appear to be the smt fault....any one got any suggestions as to what i can do other than what i am doing?
thanks

This is covered in the BT3 Frequently Asked Questions. You need to line up the orange indicator with the miter angle, not the back of the miter fence bar. Shown below at 30°.
This will also make the zero degree reading work correctly.
Only use the scale opposite the hole you used for the pivot, ignore the other scale unless you used the hole on the opposite side of the SMT.

I tihnk you meant crosscutting rather than ripping. And It's probably been this way ever since you got this saw unless you recently forgot to use the orange thingy.

[glencross]

smt problem

thanks lchin for your reply...i have never used the orange thingy in 7 years!!! but i will start today and we will see what happens!