I am leaving the Roman Church and by the Grace of God will be a Maronite Catholic soon. So, take this however you wish.
One, in the Roman Church you have the canonical right to receive while kneeling, let alone to genuflect before receiving.
Two, the Name of Jesus is so Holy that Paul tells us every knee should bend at its sound… how much more so for the Body, Blood, Soul, and Divinity of Jesus? (Fr. Groeschel once commented on this when speaking about a Protestant friend of his - if that man believed what we did he would crawl with his face to the floor upon entering the Church… strange that a Protestant has the right thinking on the Presence and most Roman Catholics, both ordained and lay, do not).
Three, while unity is important, as is the avoidance of scandal, what matters most is humility before and reverence for God. I would suggest that you continue to bend the knee. If your pastor makes an issue of it, remind him of your canonical right to receive either kneeling or standing and that he is obligated to offer regardless of either, so genuflecting is a suitable compromise as well as a time-honored gesture of reverence. However, do not fight him over it… if you must do what you must and simply offer up whatever heartache you get in return for your faithfulness.
Your unworthy brother in Christ and by the Grace of God a future Maronite priest,
Donnchadh