Rubber Cushions on 28 Leatherback Windshield Pillars

[rundmt123]

Minor item but curious what people have done. Behind the windshield on the windshiled pillars of the 28 leatherback I am restoring are two small rubber cushions, one on each pillar. There is a round cut out in each pillar for this rubber piece which I assume is to cushion the windshield frame when closed. When taking apart the car both basically crumbled and fell apart - both were very dried out and fragile. Just curious what people have used to replace these cushions and any specifics on whether they stuck out from the pillar much or were flush. One of those minor detail things that come along that can drive you crazy.

Thanks in advance for any help!