quick-release w/ horizontal dropouts
Hi;
I've been getting the impression, recently, that quick-release skewers are not thought to be great at keeping a wheel centered w/ horizontal dropouts, which is certainly matching some experiences I'm having. Is that considered true for roadbikes w/ forward-facing dropouts, or just mtn or track/racing bikes w/ high torque and rear-facing dropouts? I've seen 'chain tensioners' for sale for bikes w/ rear-facing dropouts. Are they just not needed for forward-facing dropouts (and hence the problem I'm having keeping a front-facing dropout rear wheel centers is due to some other problem), or is there some other trick/shortcut/whatever to tighten a q-r skewer into front-facing horiz dropouts?
Thanks for any insight you can pound into my head...