I was trying to find the same, asked cloney audio and hifi hut, they said they can do it, but in the end decided to do it on my own to learn (mostly because I don't think they'll spend more than 15-30min on it, and think thats not enough).
Some pointers:
- compliance of cartridge and tonearm, my guess thats ok since you already own the cartridge
- google whats the best protractor to use with planar 3. Find PDF, and print it (make sure you don't scale it up/down when printing. Some downloads:
https://www.vinylengine.com/cartridge-a ... tors.shtml. I asked on Steve Hoffman forum whats the best for my tonearm)
- get some basic alignment tool from amazon (VTA, scale, printed protractor you already have)
- read and follow some tutorials (few i used:
http://www.vacuumstate.com/fileupload/GuruSetUp.pdf,
https://fromvinyltoplastic.com/cartridg ... roduction/), there are plenty of them, even on Youtube
- use phone to take photo, you can zoom in and check if its aligned correctly
- some patience, it lots of retries to get it aligned correctly.
- use good quality/pressing record to check the sound, specially in inner/outer grooves, does it distort, whats the balance, how's the bass and highs
So my advice is to take few hours, read some tutorials and then just do it by yourself, its an useful knowledge to have!
Also, I tried to align cartridge i got with my TT (2nd hand), never quite sounded well, thought its my alignment skillz, but turned out its just a worn out stylus. Purchased new cartridge, aligned it myself in few hours, and sounds much awesome!