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Filament bonding to glass and cleaning nozzle

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I'm running an ultimaker 2 and am having issues with the filament bonding to the glass. It tends to start the bead and then peel off in spots creating lousy prints and clogged nozzles. Any ideas?

Additionally, I tend to use the atomic method to unclog the nozzle. Works sometimes but not always. Any input would be appreciated.

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