Okeefe and Merritt oven won't light, pilot light very low and not adjustable

Have an Okeefe & Merritt Model 55-280-5. It had been working fine. Now pilot is very low (a change) and the adjustment screw under the griddle does not change the pilot height. Main gas valve does not come on so oven cannot be manually lit. Any suggestions appreciated.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.