Will it ever run?

1981 XS400SH (Heritage)

Quick summary

This bike starts with a tap of the starter button even when it's cold. I've read that may be a sign of it running too rich. If I don't touch the throttle, it'll die. Without fail, I'll pull the spark plugs and they're black, wet, and smell of fuel. The right side seems worse than the left. It'll run if I give it some throttle but it has never idled on its own.

Things I know I'm doing incorrectly:

• Have not thoroughly cleaned the fuel tank. I know fuel flows really well when the petcock is set to PRI and in my defense, I have installed an inline filter.
• I have not checked the values (The valve covers are really stuck on there and I'm afraid to strip them out).
• I have not checked the float height.
• I now feel dumb after writing this section.

Info

VIN: JYA4R4007BA013075

Frame: 4R4-013075

Engine:
Compression: 135 p.s.i. (dry test; both sides)

Stock pipes

Pod air filters
Electronic ignition (TCI? I'm still learning here.)

Miles: 10,994 (as of 06/12/2015)

Carburetors

The previous owner purchased dual Mikuni VM 32 round slide carbs from Dime City Cycles after the guy he got it from broke of one of the arms that holds the float pin on the original carbs. He purchased both Left and Right (and pod-style air filters) but did not get a chance to sync them. Dime City's site says they have the following: “Jetting: 185 Main, 35 Pilot, 6DH7 Jet Needle, 2.0 Air Jet, and 159 P-5 Needle Jet” and that they are "pre-Jetted for: CB/CL450, CB500T & Other 400-650cc Twins".

I have visually confirmed the items marked with an ‘x’ below.

[x] Main Jets: 185

[x] Pilot Jets: 35 (I've stepped these down to size 30 during my troubleshooting)

[x] Needles: 6DH7

Needle Jets: 159

[x] Needle Jet clip position: P-3

Air jet: 2.0

I purchased spigot mount carb holders (w/ vacuum barb) from MikesXS because the old ones were a bit cracked and I kept reading about vacuum leaks and they issues they can cause. 

I've synced the carbs using the drill bit method and can confirm that both slides begin to move at the same time when the throttle is turned. However, even with the idle screw turned all the way in (I know you wouldn't want to do that anyway) the idle is too low. Additionally, I built a manometer (not my video) and, no matter what I adjust, the water is always pulled to the left side.