Hi. I am currently using Raichle 413s, which have only one position of forward lean. I want to try less forward lean. I read that the BTS can adjust the static position of the lean, but my question is, is that adjustment as much as is provided with the 5-position forward lean of the other Raichle boots? If not I might try to get a 5-position adjuster (I think they can attach to the 413s, right?). Thanks.