Two points that might help:
The temp in the flask needs to be high enough; the precise temperature is less important than hitting the range of temperatures that work. When I started doing long wet refluxes, I measured the in-flask temperatures with a thermometer and watched the reaction at the measured temperatures for visual cues. I found that when the surface of the fluid was about fifty percent covered with small bubbles in the early stages of the reaction, the temperature measured just under 100C. At 105C the surface was nothing but bubbles. Having observed the same thing several times in a row, I began setting the temperature by visual observation of the surface of the reaction fluid in the flask. The temperature of the oil was about 25C higher than the inside of the flask with the combination I was using. This will vary from setup to setup, depending on flask configuration and size, temperature of the condenser cooling water, how full the flask is, how deep the flask is immersed, and probably several other factors I haven't even considered.
The temperature of the reaction can be left as is for the duration. If you have any question that you may have less than pristene pseudo -- if you suspect you may have polymers left in the mix -- I suggest that during the last half of the reflux you increase the temperature. The increased temperature of the reaction could be raised at twenty four hours to the 120C range, at thirty six to the 140C range, at forty two to the 160C range, and at 44 to the 180C range. Other bees report increasing the temp to 200C for the last four hours; one mentioned 220C. None reported adverse effects on the product from increasing the heat at the end of the reflux in this manner; the reports of improved quality of the product are anecdotal, as none of us can be certain how much of which polymer remained in the pseudo. The common anecdotal comment was the increased temp improved quality and yield, but none of us have done controlled studies (at least so far as I am aware) with everything identical except the change in temp. The temp won't overcome all the gakks, but it does combat some of them.
I suspect low temp was your principal problem, but it also is possible that the effect you report is related to the reaction inhibitor included in the Eudragit packet. Its effectiveness is higher at lower temperatures, at least in my experience.
