Bill
There was a thread on here where someone had sent his shock absorbers to Bilstien for refurbishment, Tel Bilstien Suspensions, 01455 283407 £80-00 each providing they are servicable. The actuator gears and pin are now shown on the Eurospares web site as part number SAG355 at £25-00 each, not sure if this is the part you need but worth a call. They are the same part as used.the Ferrari 355 and 550. And yes they can be a problem one was replaced on my 3200 before I purchased it and the dealer charged the previous owner over £600 for the actuator.
Rex B
Manual 3200