dan_uk_1984
Getting Fingers Dirty
Mark,
Your 300gsm card will be fine, keep an eye on it as it goes through as its quite heavyweight. The Cleaning & Deep Cleaning cylcle you mentioned only clean the nozzles of the print head. It's worth trying to find the "prevent paper abrasion" setting and see if this cures your problem as it lifts the printhead assembly slightly.
Your 300gsm card will be fine, keep an eye on it as it goes through as its quite heavyweight. The Cleaning & Deep Cleaning cylcle you mentioned only clean the nozzles of the print head. It's worth trying to find the "prevent paper abrasion" setting and see if this cures your problem as it lifts the printhead assembly slightly.