Back to talking to myself...
Also still need to track down the Heavyarms/Sandrock conversion kit. Waiting for a good deal on ebay for that since I'd need to pick up a second H-arms and Sandrock to convert so I can have both versions.
Done! Around Labor Day, I found a really good deal on a second Gundam HeavyArms and Gundam Sandrock that was too good to pass up. That meant I definitely had to track down the Season One conversion H-Arms/Sandrock kit. Was patient and found a BIN auction below my target price so I pulled the trigger.
Kit arrived today, meaning I am 100% caught up, including all the Japan-exclusive releases for Gundam Wing. Now I can go to work completing the Gundam Wing - Endless Waltz stuff.... and of course, be careful not to stray into any of the other Gundam series - Zeta, G-Fighter, etc.