PETG Ironing Problem  

PETG Ironing Problem

I have spent the past 12 days calibrating but can't get ironing right for some reason.  Looking for any advice.

Machine: Ender 3 V2 with MicroSwiss NG and Creality Sonic Pad and BL Touch

Filament: Atomic PETG 1.75

PETG is in a filament dryer while printing with moisture at 11%

I have already calibrated Z Offset, Leveling is within .03 across the board, E-Steps (as people know it) calibrated for 100mm perfectly, pressure advance calibrated, flow calibrated with flow test cube.  xyz cube lookin perfect.  retraction tower and bridging all good.  

Things I have adjusted trying to get this right:

1. Speed 10, 11, 9, 15, 10, 11

2. Ironing Flow: 10, 15, 25, 30 (boogered badly), 20, 24.3% -none of these really made a difference other than 30 which made it worse.  24.3 was the best.

3. Distance Between: 0.1, 0.15

During testing and doing live adjustments (not on this run) was by upping the hot end to 266 and the flow to 135% which gives me that 24.3% number for flow.  It made the surface glossy and smooth w/ no boogers.  Or so I thought.  Half way across the print it starts out as matte then boogers then goes glossy.  Printing starts on the right and finishes on the left.

Manufacturer printing temp is 240-265.  Bed range is 80 +/10.

I am printing at 266 bed 80.  Microswiss says their hot ends need to be 5 degrees hotter to get the same effect.  So that 266 is really 261.  I have tried printing all the way down to 250 which the rest of the print hates. 

I got nothing.  Any ideas on what I need to tweak? One could say flow but I have already pushed it high enough that it boogers.