Aquila UBass Strings Thundergut

Bought these strings to replace a set on my electro acoustic Ukulele.
Fitting them was straight forward although they stretched forever and trying to keep them in tune was something else!!!
After some use I noticed they became very sticky and sliding of notes was impossible.
I read on a forum that the application of talcum powder would overcome this problem. I tried this idea and yes it instantly made the strings more playable.
They took an age to settle tuning wise and even then they are still susceptible to temperature and humidity changes and constant tuning is necessary during a performance.