Some pro's run without a top cap on the headset and the stem sits on the compression ring to get a lower position .. this approach would give you a few more mm's probably if the headset you've got is designed with a compression ring .. but I'm not sure how long your headset will last but I guess if your a pro it don't matter
Some pro's run without a top cap on the headset and the stem sits on the compression ring to get a lower position .. this approach would give you a few more mm's probably if the headset you've got is designed with a compression ring .. but I'm not sure how long your headset will last but I guess if your a pro it don't matter