From Top Flite regarding MonoKote question today. I’m not having any problems at all and I use MonoKote often:

Thank you for your recent e-mail. No, we have not been having any problems that we are aware of. It has also come to our attention that some of the new irons do not get hot enough to activate the adhesive. We suggest using the Top-flite sealing iron.

I hope you find this information helpful. Should you have any further questions or concerns, please do not hesitate to contact us at this email address. (Please be sure to copy all previous emails into any future questions.) You can also reach us 217-398-0007, or via fax at 217-398-7721.

DID YOU KNOW that our web pages now all contain FAQs? (Frequently asked
questions) Please drop by and take a look! We hope you'll find the information helpful and valuable to you.

Sincerely,
Eddie W.