I have the same problem with hyperlite lace locks. Hyperlite boots fit me better than ronix boots but I buy the ronix lace replacements and put them in the hyperlite boots because their lace lock works better.
OK, I'm a little late with the update but I wanted to make sure the problem was fixed before I commented. Jesse McMeel from Hyperlite sent me some replacement laces and lace locks at no charge to me and they are infinitely better than the ones that came on my Remix boots. These are smaller and are spring loaded to stay tight and they work flawlessly. I'm very impressed with Hyperlite's dedication to customer service! Thanks Jesse!