I have a Boss Multi-Effects 50 and a NS-2. Should the NS-2 go before or after the ME-50? It seems like when I put the ME in the fx loop the NS-2 is less effective in the front of the amp(I have alot of noise from old non-grounded outlets) so I am always fighting the humm.:mad: Also, would I benefit from using the NS-2 in the 4-cable method? Thanks!