I have a buddy with a gear lift - after the first ride, all 4 boxes were leaking oil. I think there have been a lot of problems with the gear lifts that are out now - that may be why highlifter quit selling them. I have heard that there is a revised version coming out soon thats supposed to have all of the bugs worked out.
Was the leak coming from the flat gasket between the portal box and the cover plate?
I have had a couple of discussions with Chris Keeter, owner of SXS Gear, about what IMO are some necessary changes in order for me to purchase a set. I have received several pics and videos from Chris, and IMO it looks to be a good product, but could be made better.
Any additional first hand information that you could provide, I would like to hear about it.