@SquirrelMaster and
@Shit Snacks TY so much for the great suggestions. Sadly while I looked and looked (I looked so hard that I found exl8r stems and official WPA in Canada) but nobody had anything including rubber adapters. But I forgot all about Delta 3D Studios. They have just what I was asking for and someone in the "reviews" said it worked for his Splinter. So I'm good for now.
First impressions are that it was easy at first to get the big clouds, harder to get the smaller ones. It doesn't help to be a thirsty bitch and I like my lung busters. But I think that I've got it now and can do 3 solid hits from a rimmed basket screen constantly with a fresh battery. Using VTC5D at the moment, but probably overkill. I prefer stem packing about 0.25g than using the rimmed screens. Now I can get 6 to 8 hits to share with friends or blast away on my own and do about 4 or 5 massive hits. Battery life isn't bad for a single 18650. I'm coming from months of heavy desktop use and without a tolerance break, I may have been a bit underwhelmed. But I found it no weaker than my brick and I already tested it outside and loved it. Flavor died off a bit earlier than expected, but I'm also not used to vaping such large loads in this many hits. It's also a long time since I've used anything but ultra fast extracting vapes. So I can see this truly becoming my daily to help keep my tolerance lower and just use my DC Elev8r for bedtime use and special occasions. I like that I can use it outdoors in the wind while fishing or just relaxing on the beach. If I had to give it a negative of any kind it's the lack of rimless bowl screens of old and the lack of availability of official exl8r stems and WPA. I'm lucky in that I got 1 large exl8r with the Splinter v2 that I got for my nephew's birthday. So I'm not complaining. But man, wouldn't it be nice to have those old screens again?