I have an old Jonsered 625 with an 18 inch bar, marked on the bar is 3/8 - 05.8 on the chain itself the cutting teeth have a 25 stamped on them and on the chain links is husqv. Went to Lowes asking for advise the guy sold me a 3/8" filekit which has 7/32"(5,5mm). He said it would work BUT is it correct ? Some advise before I use it.