The 5K on each cylinder resistance by no means has to be exact, simply a target to shoot for. Once the plugs have wet out they may spark outside engine correctly but then revert to shorting down the glass under cylinder pressure. You can clean out engine of excess fuel somewhat by whirling it over with starter and throttle wide open and plugs removed then let sit overnight to evap the rest. Carb cleaner will wet the plugs out sometimes, use ether or starting fluid which quickly evaps faster than carb cleaner and it starts better in a situation like that but BE CAREFUL!!!! NO MORE than a 2 second shot in each carb and then block the carb opening by choking it to trap the ether or it quickly evaps out of the carbs. Get ready to start and then quickly pull the chokes open and whirl engine over, if viable it WILL at least pop or run a few milliseconds or something is still wrong with the motor. If it doesn't then DO NOT ADD MORE, you risk an explosion, do NOT underestimate this! I watched a friend blow out 6 of 8 connecting rods in a V-8 engine once abusing the stuff! The stuff is safe as hell when used correctly but it will not tolerate an idiot using it at ALL. Don't take that personal; not intended like that. If the engine runs at all you are likely able to reload it with more ether to go further but NOT until the first load has been burned. Don't be afraid of it, just use it wisely.
Wet plugs must be cleaned and dried. I use alcohol or acetone to degrease them but the tips may need filing at the electrodes to lay bare new sharp metal edges. Spark likes sharp edges to jump off of. May even need brand new plugs if too black.
The valves are fine if it ran before.
If you took the pulser plate loose you have to recertify the airgap there (not to mention the timing too), else the gap wander may weaken the logic pulse that occurs when the reluctor passes pulser and then the pulse is not strong enough to signal a good clean firing point. Or, more weak spark. I tighten up the airgap, closer makes a stronger spark. I use around .012" gap there. The metal parts MUST NOT MAKE PHYSICAL CONTACT.
Check the resistance across the kill switch, more than once too much resistance there has cut spark to not start engines. No number there just as low as you can get it.
Your battery must be known good and hot as in charged 100% or wasting time, if not the starter pulls power off the coils and it never starts.