I just installed a Highlander co-axial UST last week. The instructions are very clear & the installation is pretty straight forward.
I made up a simple jig with a piece of plywood, slotted to accommodate the 1/16" round bottom router bit I bought from LMI along with the pickup. The jig has a fence on one side & I simply shimmed it level to the saddle slot & clamped it to the guitar.
I learned (AGAIN) that a Dremel tool is not a router. Before I do this again, I'll get a 1/4" to 1/8" collet adapter for my lam trimmer or small router. My Dremel is just too wimpy to do a super clean job... even with this tiny bit.
I'm not familiar with the Fishman unit, but I assume it would work better with a round bottomed slot.
Highlander recommends a .060" deep slot. Once the string pressure is applied, it seems to compress into the channel. I didn't need to adjust the saddle height at all. I like that!
BTW... The Highlander system is (to my ears) the best UST pickup I have heard to date. I'd be very interested in hearing how the Fishman works out for you.
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