I had a similar issue. I like the SXN-210, it has a removal cap and 1.0mm tip size. I got a box of 12 for a few bucks from Amazon, here is the link since it's

I had a similar issue. I like the SXN-210, it has a removal cap and 1.0mm tip size. I got a box of 12 for a few bucks from Amazon, here is the link since it's hard to search by model, https://www.amazon.com/dp/B0002LD1NK https://www.amazon.com/dp/B0002LD1NK