We did away with the fixed rod and instead replaced it with a tension rod instead. Set at height we wanted. Downside is it's not very decorative. Another option would be to glue some wood decorative on each side at the level you want and install a standard rod to that instead. Just make sure the screws aren't longer than the wood is deep.
I'm curious if anybody has a suggestion for this. We recently renovated our bathroom. The new shower has marble walls. The shower rod was hung higher than I would have expected, with the result that a standard 72" curtain just barely touches the edge of the shower when hung using standard hooks. IOW, it does not hang down far enough to overlap the inside edge of the shower and completely prevent water from coming under the curtain onto the floor. Unfortunately, since the rock walls are hard to repair and expensive to replace we're pretty much stuck with the odd shower rod height. We MIGHT be able to lean on the remodeler really hard and get him to replace the rock walls and hang the shower rod about 2" lower but that would have other repercussions so it's not really an acceptable option.
My wife wants to use a combination of a decorative curtain visible from outside with a shower liner that actually limits water spray so a standard curtain works for her, but we need a shower liner that hangs low enough to overlap the edge of the shower a little.
We have found curtains that are WAY too long (80+ inches) but nothing in the desired range (74-76").
Of course an obvious alternative would be to use hooks that let the curtain hang a couple of inches lower than standard hooks but we have not found any of those either.
Any thoughts about other ways to solve the problem?