Anyone have any experience with in-ground telescopic cylinders? How is their performance? Hopefully getting ride of a pair of schindler inverted jacks, but the elevator is right on the river, I'd much rather dig down 12' then 35' with such a high water table. But don't want to recommend to the office/customer a idea thats a great concept but not practical. I suppose they have had a crappy ride all this time from the current set up can't be much worse.