Hello, newbie to road riding and this forum so pardon my ignorance. I bought an entry level bike about 4 months ago and enjoy riding it. I had my first flat recently and replaced the tube with one that has a Presta valve as opposed to the Schrader. Since I've installed it I've ridden several times and I notice a "bump" in the front tire. It seems to be revolution dependent. Through a bit of research I've learned that I should've installed an adaptor for the Presta valve. Could this be the cause of the rough ride? Thanks in advance for any advice.