HELP Tone Suck/Feedback on DIY FX Loop Pedal

[R1dedal1ghtn1ng]

So ive been fiddling with this box on and off for a while now.  dropped it completely to pick it up again.  Its a basic loop box for my effects.  Ive got it working but currently I am witnessing a lot of tone suck when i kick on my effect... and if i crank the volume its very buzzy/scratchy.  any ideas from anyone why?

I had no noise at all when i had it plugged into my micro marshal amp but when i plugged it into guitar rig 5 and cranked the volume on my mbox, i could hear it.. just with a lot of feedback.. hence how i know its actually doing the job



i know the image is slightly blurry so left to right 1 is to my input, 2 is my fx receive, 3 is fx send, 4 is output, 5 is free, 6 is linked to 1

ive crimped my connects but havent soldered anything yet in case i had to go back and fix something

[R1dedal1ghtn1ng]

not to sure on bumping rules.. so i apologize.  just not sure what is wrong with this and could use some help.  thanks ahead

[Kevin Mitchell]

If you insist that everything is relaying/switching fine maybe you should solder the wires and see if that does the trick.

Sorry all I have is a simple guess.