Do I need to re-mount my bindings?

DayManBought these skis off a fellow NSer, Blends w/ Tyrolia Attack 12. I think he said he has a 29 boot, and I have a 27.5, but the Attack's have a couple cm of adjustment and the pictures have the bindings adjusted to the smallest setting. I can click into the bindings fine, did a living room nose press and they didn't pop off, but this little gap has me concerned. Don't know a lot about bindings but I'm guessing something with the forward pressure will be off, hoping someone who knows more can shed some light on this.

On the backside of the heel piece just above the track your binding sits on will be a metal tab protruding from the housing of the heel piece. On this metal tab will be six dashes of both sides. These dashes are for you reference and is the the main indicator for setting proper forward pressure. The ultimate goal is to have that metal tab with six dashes fall directly in the middle of the bindings housing. So we are looking for three of the dashes to be within the housing of the binding and three exposed on the outside of the binding. This is perfect forward pressure

NesquickmanOn the backside of the heel piece just above the track your binding sits on will be a metal tab protruding from the housing of the heel piece. On this metal tab will be six dashes of both sides. These dashes are for you reference and is the the main indicator for setting proper forward pressure. The ultimate goal is to have that metal tab with six dashes fall directly in the middle of the bindings housing. So we are looking for three of the dashes to be within the housing of the binding and three exposed on the outside of the binding. This is perfect forward pressure

This ^. Also, if the skis were mounted at centre for the size 29 boot, moving the heel forward for your 27.5 boot will put your effective mount point slightly forward of centre, which may not be desirable. If they weren't mounted at centre originally though, nothing to worry about.

They look good to me. It is hard to tell from the pics but it looks like the bindings were originally mounted at the recommended line so by moving the heel piece forward a cm or two you should be fine. Line blends recommended mount is -4 from center so you got a decent amount of room to work with before they become forward mounted.