Hi all I have upgraded my 3 way switch on TL-1 to a 4 way switch to increase the available tones on this axe. The upgrade adds to the normal Bridge, Bridge/Neck Parallel, Neck to a further option of Bridge/Neck Series. This mod will give you a louder and darker tone and leaves intact the normal configuration so you have nothing to lose other than the $15.00 odd for the switch, whilst I was on the job I upgraded the pots to CTS solid shaft 250k so that I could put on a knob that was closer to the fender original. Also added in a .047uf capacitor capacitor and a 120pf capacitor on the Volume pot to compensate for the natural lloss of high frequencies through the guitar cord when the volume control is partially rolled back (Vol kit).
Anyways when testing the wiring out I found that the switch was not functioning as expected in that the neck pickup was remaining active.
The purpose of this post is to alert those who want to do this mod of the problem I encountered as there seems a distinct lack of info around talking about this issue. The distance the 3 way switch travels from left to right is about 3mm less than that of the 4 way switch so when mounted the four way switch was not fully engaging into the far left and far right positions (Neck and Bridge), the only way to fix it with the control plate in the kit is to widen the channel the switch runs in, very simple to achieve with a hacksaw, took about 1.5mm each side and up it goes... 100% working.