Only good for two or three uses. Then it won't come out

This product is very good just as advertised Until the third or fourth use. It's like the contents drys up or just won't come out There is no advance wheel or button and there does not seem to be a way to get the liquid onto the brush after the third or forth use I have three of these pens and each one acts the same after a couple uses. Terribly disappointed Anyone else have this problem??

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