.htaccess Question and Ranking

[ecrmeuro]

I have some basic rules set up in my .htaccess file and just curious as to the implications of them as I seem to have a website ranking very low on Search indexes for no particular reason that I can fathom. My question is a follows

I have a htaccess rules set up in my application application that first strips the file suffix and then adds a closing brace for example

Rule 1:  http://www.domain.com/my_page.php becomes http://www.domain.com/my_page
 Rule 2:  http://www.domain.com/my_page becomes http://www.domain.com/my_page/

Will this rule expecially Rule 2 effect ranking or will these rule have no adverse affect on the website as my MOZ reports still seem to have pages listed win the Top Pages by PA section without the www? Below is an example of the htacess file.

RewriteEngine On

Redirect Trailing Slashes...

RewriteRule ^(.*)/$ /$1 [L,R=301]

RewriteCond %{REQUEST_URI} /+[^.]+$
 RewriteRule ^(.+[^/])$ %{REQUEST_URI}/ [R=301,L]

Redirect non-WWW to WWW...

RewriteCond %{HTTP_HOST} ^contractor-accounts.co.uk [NC]
 RewriteRule ^(.*)$ http://www.contractor-accounts.co.uk/$1 [L,R=301]

Handle Front Controller...

RewriteCond %{REQUEST_FILENAME} !-d
 RewriteCond %{REQUEST_FILENAME} !-f
 RewriteRule ^ index.php [L]

[ThomasHarvey]

I've had a look at your site (it's in the htaccess)

I've run a crawl on your site, there doesn't seem to be any redirect chains, which is good, so you've got no issues with what you have above.

However on a side note, I wouldn't rely on 301 redirects, you still have a lot of "old" links that are going through 301 redirects, I would update these so they don't need to pass through a redirect.