tyre glue

[Zippy G]

HI All
Can anybody recommend a good tyre glue. I preffer glue that is thin and runs round the wheel freely.

Over the years I have been using 2 different glues which were very user friendly and I could literally lift the tire at 1 point pour in the glue and it would go half way round the wheel in seconds and then I would flip the wheel and pour glue in from the opposite point and job done, recently I am still using the same glues BUT I the glue doesn't run???

I need to go round every millimeter of the wheel with the glue as the glue does not run round freely, I also need to squeeze the living daylights out of the tube to get the glue out???

Has something changed that I have missed???

Help please.