Looks like my parents will be moving in with my sister and will need a stair lift to negotiate the stairs. I'm responsible for finding one. There are a fair number of used units available on Craigslist. They will be have to be cut to length to fit the stairs. Has anyone here cut down an existing stair lift track to make it fit? I won't be doing it. My BIL will. How difficult is it?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13