Bruce,

I am sorry not to have the time to reply, however, if you care to call my
office I will give you a quick run-down on "one man's look" on cleaning
options.  Rarely a day goes by in which I don't read something, see a
project or talk about cleaning techniques and philosphies.  By the way, Ken
(Apple) performed over 42 cleaning mock-ups for the building you referred
to.  Additionally there are quite a few experienced applicators on BP, Mark
and Michael D. to name a couple.

Best,
Leland

Leland R S Torrence
Leland Torrence Enterprises
Management, Restoration and Conservation
203-397-8505  Fax: 203-389-7516