Not to be obnoxious, but I'm going to post some of the findings (and thoughts) here for myself, and maybe in case someone else finds it useful.
From Bart's Nbr.3 above, PaymentRetryPeriod is the default 8 (hours).
Nbr.7, set test_request to "False". The fulfillment gateway permits a test cc nbr, so all is fine there.
Nbr.5 I cannot figure out how to ship the items.
/ecommerce/admin/orders/fulfillment states "these items are needed in order to fulfill all outstanding orders", word "items" links to /ecommerce/admin/orders/fulfillment-items-needed which shows no items. Also the /ecommerce/admin/orders/one? pages do not present a link to fulfillshipments.
Shipping-avail-p shows "Shipping Avail" for all items entered/ordered.
Next, I'll check permissions on the package files, then map the shopping cart/order logicflow to specific files to identify problem spot(s).
