There is nothing to fix. A tight engine means it will generate more power and last longer.

I have never had a problem with using a standard 1.2V Nicad Glow driver but if 2 volts works for you that is good. Is your fuel fresh? Water contimination in fuel can cause hard starting. Also, not using a fast spinning driver when engine is new will make starts difficult if not impossible. I don't care for using a chicken stick to start my tiny Norvels.

Some Norvel Tips:
Fuel: 25-35% nitro should be used on the smaller engines. The smaller engines dissipate more heat per unit volume than larger engines. As such the higher nitro helps them maintain the proper operating temperature range. Too low nitro and not only will you lose power but also its ability to be tuner friendly because it is running too cool.

Engine: If new engine is too tight, don't fret. Use a heat gun or a small pen torch to heat the engine's head. Do not concentrate the heat source on one spot, heat entire area so heat is transferred to entire area. The heat expands the liner and loosens the engine up for starts. Once engine is running get it up to full throttle rpm ASAP and then adjust the high end needle mixture. It'll take several runs on engine for it to eventually loosen up on its own. Whatever you do, don't use an abrasive to hone the cylinder to loosen the engine. Also, don't crank engine with starter and glow head unplugged to loosen the engine up. It'll work but you are wearing away engine life. Be patient, it'll loosen up on its own.

Prop: Norvel's love to rev and not be bogged down w/ large props.