Pitss S-1S related questions

We are a group of three German aerobatic pilots seeking a Pitts S-1S,
preferably N-registered, with a 200 hp Lycoming.

Regarding the Pitts, we are beginners. As every plane has its typical
"teething troubles", we wish to get in contact with S-1S
owners/sellers/pilots who are willing to offer their support. Perhaps
we can avoid some of already-known beginner's mistakes!?

Any advice would be highly appreciated with regard to:
- Certification
- Flying skills/training
- Maintenance (AD's, mods, etc.)
- Parts supply
- Experience with options/upgrades (keywords: Wolf cowls, spring gear,
Haigh tail wheel, Penn Yan, Hooker, etc.)

Please e-mail to:

Many thanks in advance!
Sascha