[ddmcse]

the gromets are round rubber pieces like washers under the bolts used to clamp down the valve covers .they might be flattened too much and need to be replaced but it's not earth shattering , you'll need to order from toyota though
the stock screw/sbolts suck ,they are philips and they strip easily
find a cheap replacement like an allen bolt .
tighten down in a cross pattern, don't tighten down one corner you want apply pressue evenly as you clmap down the cover
change the plugs but pay attention to the gap on each plug. installing new spark wires would be a good thing at the same time . you are liable to find a great deal of oil around the spark plugs
if you do change the plugs and the wires , do one at a time so you don't confuse what wire goes to what plug , you know firing order .
this job should be straight forward
i think i have that gasket you are talking about hanging on my garage wall it's left over from a gasket kit that had n/a and turbo gaskets