Starter Grind Roulette

[Starwood]

Cranking up the 70 Stepside I got about 9 months ago has been a Vegas play since I drove her home. Early on - on very rare occasions - there always starter engagement - but then followed a very disturbing grind. However, it seems to be happening more often. Lately, I've been wincing when I turn that key.

Is this a simple shim issue - or something bigger involving the flywheel that may require a visit to the Transmission Pros?

Thanks in advance for any replies.