What a gorgeous system, I would want the IIe style mouse too; I really hope you can get it sorted. All else fails head over to Apple Fritter forums, those guys know everything Apple II to an impressive degree.
If you're not keeping the faulty mouse card or don't have plans to repair it / use it for parts, I'd have a go at [fixing] it. I have several II's but only one mouse card here, and a decent shot at fixing it. No pressure but if you're willing to send it my way let me know; it wouldn't go to waste.
If you're not keeping the faulty mouse card or don't have plans to repair it / use it for parts, I'd have a go at [fixing] it. I have several II's but only one mouse card here, and a decent shot at fixing it. No pressure but if you're willing to send it my way let me know; it wouldn't go to waste.