Hello - short time lurker and first time poster - please go easy! (longtime Fender combo user who just crossed over to the Marshall realm) I have a Marshall DSL100H and am looking for options to use a footswitch to get between modes. I see that there are multiple Marshall footswitches available (or out of stock) and am wondering which would work with my amp? I have the PEDL-90009 I believe, two switch for channel/reverb) but am looking for more control. PEDL-91016 seems to be discontinued? PEDL -00021 seems to be readily available - but would it work? Thanks for any help! PS. I am currently sifting through the search options for the forum hunting for the answer...but am coming up empty, hence the new post.