“It's hard to put those memories away,” Arthur Kane admits in this affecting DV portrait, referring to his glory years (1971-'75) as bassist for the epochal glam-rock band the New York Dolls. After the Dolls fell apart “Killer” Kane went nowhere fast, drinking and seething with envy as lead singer David Johansen enjoyed a healthy second act as mock lounge lizard Buster Poindexter. Eventually Kane found the Mormon church and dried himself out; video maker and fellow Mormon Greg Whiteley finds Kane laboring in an LDS genealogical library and preparing to reunite with the Dolls for a UK festival. Whiteley can't seem to decide whether this is about Kane or the Dolls, but the beaten-down bassist's awkward encounters with his old bandmates are undeniably poignant. PG-13, 75 min.